Shoe sewing machine



Aug- 10, 1943- B. T. LEVEQUE v 2,326,726

S-HOE SEWING MACHINE Filed Aug. 17, 1940 5 Sheets-Sheet 1 Fig. i

5, i 44? 2.9% 260 'l l I: o 2 6' afs "1' 267 f Me7 .y '50 ff' g" H 255//7 /6 K 3/6 353/4( 60 226 y 5 0 256 /70 /54/ 254 35 /019 266 25a -5/2 Iya ,410 J 7:2 0 /aa WL' ness Aug. 10, 1943. B. T. LEVEQUE 2,326,726

SHOE SEWING' MACHINE y Filed Aug. 17, 1940 5 Sheets-Sheet` 2 Witnes Aug.10, 1943. B. T. LEvEQuE 2,326,726

SHOE SEWING MACHINE Filed Aug. 17, 1940 5 Sheets-Sheet 3 Aug. l0, 1943.B. T. LEVEQUE 2,326,726

4-SHOE SEWING MACHINE Filed Aug. 17, 1940 5 Sheets-Sheet 4 1 Y Fig. /2

nyentoo Aug 10, 1943- B. T. LEVEQUE 2,326,725

sHoE SEWING MACHINE Filed Aug; 17, 1940 5 Sheets-sheet 5 C) Fly. /4 Fg/certain respects to the machine-disclosed v present inventorsr prior-Patent No.- 2,144,766 of January 24, i939, and in therein referred-topatents issued on divisional applications leased .on -said patent.

enemies Aeg. io, ieee Y United Shoe: Machinery. Corporation,

Y aard Levegue, i/Venhalm,liiass., assigner to Borough Flemington, N.5.,' a corporation-oi New t crsey [applicatie-n The present inventionrelates primarily to shoe sewing machines, and is herein disclosedasemliodied in a curved vhook nee-iln lockstitch shoe sewing machineadapted to sew the outsole to the welt and-upper of a welted shoe, theillustrated.

embodiment of the invention being similar in in the The presentinvention has as an object the provision' in ari-outsole shoe sewingmachine of new improv-ea mechanisms capable of actuating thefvariousparts in 'the desired manner' at high speed, and which will neverthelesspermit the parts-to be brought to rest, von stoppingthe machine, quicklyand in proper position without damaging shock or jar. i

Another object of the invention is to provide, for-use in machines ofthe above type, improved mechanisms for controlling the machine wherebythe operator may, by vmeans of a-single control member, start and stopthe machine and likewise control the speed of operation thereof.'

i/'ith'these'obiects in view, a feature ofthe presentinventioncontemplates the provision in an outsole shoe sewing machine having amain v.sewing shaft inthe form of a multi-throw crankmit; means fordisconnecting the sewing shaft 'its-driver, a plurality of separatemechanisms for actuating the stitch forming-and work handling devicesvfrom-'the sewing shaft, each of the' mechanismsVV being actuated from acrank s of the multi-throw crankshaft, and means for Vdisconnecting theactuated devi/esu from the sewing s'raft while permitting continuedrotation cf the shaft comprising Va control member for moving tionshetwee the sewing shaft and thefactuated devices, and means foractuating the control inenicer. 'Each of these trains of mechanism 'Yinc`l idee a lever provided with a earn slotwithin w h is received afollowenone of said elements of-*ig reciprocated relative `to the otherby a crank of the sewing shaft to hnpart to tieactuated member acharacteristic movement deterled by the particular configuration of thecam such arrangement making possible easily` driven, smooth runningmechanisms capable ofY high speed operation while permitting stopping ofthe machine Without injurious shock or jar.A

In' accordancewith another feature of the 'invention, these tr ins of.mechanisms include .elements adapted to'be disconnectedtofdiscontheindividual elements of the'Y connecthe crankshaft has comexto'rest; Fig.2*,is a detail view ini right/side elevation Vof the vtrain of assessi7, iste, sensi ne. assess ic ciaims. c.. infect) neet the variousactuated: devices from their actuating members so ythat, uponstoppingthe Vmachine, the yvarious stitch forming and work f handling'devices maybe brought to rest lndependentlyof the crank shaft, theconnection and 'disconnection of these elements being effected byundergthe control of the operator, said means likewise being arranged tocontrol a twospeed driving mechanism by' which the vmachine may beoperated at .high orfat low speed, asdelsired.

yAn outsole shoe sewing machine embodying the kseveral features oftheinvention :isillus- Y Y trated in the accompanying drawings, inv whichFig.' 'l isY .View in. right-hand side elevation, Lurrtly'inl sectionfothe head of ithe machine, showing a portion of the .two-speeddrivingmechanism and certain ofr the actuating' mechanisms for 'the istitchforming and workhandling devices, illustrating'.particularly the )trainof mechanism for actuating the take-up, the partsr being shown after thedisconnection of theA disconnectible elements of said' trainI and beforeVmechanism for vactuating lthe needle, likewise illustrating theparts attheinstant of disconnection ofthe disconnectible link;` Fig.' 3 is adetail sectional View, on an enlarged scale, taken on the lineS-cf-E'ig'. 2, showing the arrange- -inent of cam leverand cam roll orVfollower in i th'e'cam slot of said lever.; Fig. 4 is a. front View,

partlyin section, 'showingthe crank shaft 'and the lcweriendsnithe'connecting rods orilinks 'of the individuali 'actuatingV mechanisms4for vthev various stitch forming and work'feeding devices; Figs'j-S vto1G, inclusive, are views taken on' the section lines t-ac-e, 1 1, .c s,.L3- aand 'iii-' iii', respectively, 'ci Fig. 4,' showing the var- =icusangular: positions "of the' diiferent crank throws in order-tooperatethe variousfdevices'in proper timedv relation, the'crankshaftbeing substantially in its 'position at the instantrof disconnectionv ofthe disconnectibiev 'elements Vof the several'trai'ns ofmecha'nismsfasin-Fig's. 1 and 2, 5 showing the crank for the takeup,'rli'ig.

'5 the crankfor the work feed, Fig. '7 the crank for thevneedle,thread'hooln' and presser foot lock, Fig. 8' the crank" for the awl,Fig.v 9 the crank for` the shuttle and Fig.` 10 vthe crank for the.loe-per; Fig. ll-is a View in rear elevation-of a pcrticnofthe'headoffthe machine-showing certain ofthe actuating connections ofthe'starting lstopping andspeed Vcontrolling mechafnisim; Fig. l2 is adetail view left-handside i fielen@ |2-I2 of Fig. 11, illustrating on asomewhat ylarger scale the two-speed driving mechanism shown in Fig. 1;Fig. 13 is a detail sectional view of the double-coned clutch member ofthe driving mechanism, taken on the line l3--l3 of Fig.

12; Fig.r1 4 is adetail vieW'in right side elevation,

partly infsjection, of the take-upgmechanism ofV the machine, showingthe thread 'measuring mechanism and the thread clamp, the take-up armsbeing shown in extended position for set. ting the stitch; Fig. 15 is aView in front eleva- Y tion, partly in section, of the parts shown inFig.

14, and taken on the line .l5-4550i that `figure;

and Fig. 16 is a view takensimilar toLFig. libut n :spreader'rSZ :andzrotary .shuttle 'These .parts .are substantially similar in arrangementkand mode .of :operation :to :those .of 'the .machine disclosed in -fthepresent inventors v,prior .*P'atent No.

:2151431366 vabove ,referredxlto :and :in Ithe :patents issued on.divisional .applications based thereon.

In order for the various sewing and Workhan- Ydling devices.tovwithstan'd the .repeated shocks and strainsofthe stitching.operation when Ithe machine Pls :operated .at -.high speed, :the partsimustbe.stronglyl constructed, with :the result .that 5I. @they are ofnecessity'relatively ,'large Aand heavy( To actuate -zthesefparts in iproper timed relation, imparting .to eachdevice 'the:desiredcharacteristic movement, .in Ycertain 4cases involving a :rapid.acceleration and ,deceleration in .but a ,fraction :i

elevation, partly in section, and taken on the line l sirablecharacteristics of applicants patented machine but free from theobjectionable features incident to the use of cam operated mechanisms.

The main shaft of the illustrated machine, as best shown in Fig. 4,consists of a crank shaft 36 Nprovided with a plurality of throws orcranks,

-each of Which,by suitable connections, actuates 'a' separate'train ofmechanism for driving the stitch forming or work handling deviceconnected thereto. The individual cranks of the crank 'Shaft 35 areconnected to their various stitch vforming and work handling devicesthrough meolian'isnis which convert the simple crank mo- -tions intovcomplex movements best adapted for actuating each device according thecharacteristic motion desired. This is accomplished in the `presentinvention by the provision of members .ofa .stitch forming cycle,.fnecessar-i'iy .requires l actuating mechanisms :that rare 'in,themselves .strong and fdurable. .a consequence, :the

proper actuation `of ithe vparts :at high -speed, :and

.thestopp'mg of :the :machine :quickly without un- -workhandlingrdevicesin prooerzposition topermit removal .of ithe work, .represent `serious.prob- 4levas.

In :the ,unashirre of applicaritls ,prior :patent ,alcove 1eferredfto,the :desiredresults are sought to be accomplished by actuating theprincipal :thread .manipulating .and work feeding devices :from the camshaft through separate trains of mechanism, .and by :providing .in these.trains of mechanism, elements adapted tto -be disconnected, lwherebythe principal operating devices .of the `Inacl'iine Canlbe brought .to,rest at :apredeter- :time rin'the `cycle of .operations without`-.er.a1 Istitch'forming .andwork'ffeedins devices, but

these mechanisms, instead `,of comprising' cam disks lon the gmainsha-ft :of the machine as in :applicants prior patent, .aan constructedand arranged for .crank actuation while imparting the :requiredmovements to the stitch forming and f work feeding devices andlikewisegpermittine idisconnection .of .these elements upon Stopping themachine- The well 'recognized advantages of crank opv-e'rated mechanismsare thus secured and Yaggrna- .dueyshocknr jarwith :the stitch formingand having cam slots Within which are oscillated camfollowers'byconnections to the respective cranks :of the crank shait'the.corteuration'of the different :cam slots ibeing .arranged in accordancewith rthe requirements of Ythe respective l.actuated devices.

The nrankor actuatingtherneedle is indicated .at-3% tEigs,.2, 4 and Y?)-and is connectedfbymeans a link Alito-.a rock arm 4t2 pivotallysupprtedon a cross shaft #A .at the rear fof lthe mach-ine. .The forward-endfofthe rock armis providedvvith a roll or follower :46,see 3, lwhich isreceived Within a cam slot 68 in the needle cam lever'. .For'eachrevolutionof the :cra-nk shaft, the 'fol- Alower is oscillated man arc:from one end fof the ...cam slotte the fother and back ,to Vthestarting limit Aof .itsthrom -at rwhich l.time ethe velocity .of the.follower -in the -cam ,slot drops to zero, a

smooth running :mechanism is obtained which makes possible ,the K.use-of relatively,light-weight .parts.- j

AThe take-uprmechanism,liereinafter described,

actuated fromfthe cran-1:50 (Figs. i1, 4 and 5,)

at the left-hand end Vof-the 4crank shaft36, as viewed from :the -iront.The Acrank is connected by link`62 to rock arm Alili `pivotally mountedon cross shaft 44, the 7rock arm being provided at its'outer end with afollower roll similar to the one illustrated in Eig. 3 and which isoscillated in an `arcuate lpath Lalonga nam slot in cam lever 58. Thedwell portion :of vthe 'cam slot is indicated 4at 1Q, -While thelactuation of the take-up occurs during the Atraverse bythe r0l1-of vtheinclined portion F12, `a brief dwell being provided at the `upper endbythe short ,arcuate portion 14,

in addition to that .afforded -by the passage -of the `cranktlnfoW-B-over .dead center. g

The timing `vof the takeup relative to the .needle is determinedprincipally by the angular .slipping ,or imisadilstment. Vche!"aeteristic movements-.of the .devices Aand j position -of the take-up:crank throw 6i) compared with that of the rneedle `crank 1% `(see Fiss.5 and Y),` Since `s l'iait 3S is preferably of -c-neapiececonstruct-ion, the positions of the cra-HKS may b2 uiately located .and.the proper timing lof :the parts maintained with no .risk o1 Variationsin fthe chine is produced having all the 4novel and de` minoradjustments in timing may b'efquickly andr easily effected, however,through substitution of the individual camy levers;fand:atjfconsiderablykreduced;expenseas compared ith cam'fdisks.

.` The crank Vfor actuating the feed mechanism videoI wahl a @am vsioni|30 within which is `rtrj ciprocated a rollfor follower |32 Carried byanupward-*extension |34 of the needle-camlever'l). y. The parts are shownin Fig. lLwith'the clutch Y in clainpingfposition, the follower|32.bein`g a t= islindicatedat iejwith'itsconnecting liniats,

Figs. 4: and 6, While the crank' for the a'WliS Vshown at 89 in Figs. 4and 8, with connecting uri; 82 to the awifrock-farm; The vsnuttieis-d-riven from stillanother crankll, 'Figs. il and`9',.

and the flo'oper from'k crank SS, Figsji and 410.

Each crank aotuates thro-ugh a connecting'link and rockarm va cam leverhaving'afcam slot ofY the c'onguration to operate 'therespectivedevicein the required manner, the rook-.armsbeing arranged along-thecrossshaft lilly and-the cam' levers along a parallel! supporting shaft'99.

. The various stitchforming and: work handling devices are actuatedfromtheirrespective cam levers -through appropriate linkages.' I n orderVcrank shaft, rock arms, and cam' levers. 'As a l,

result, only the lighterportions or the mecha'- nisms need be 'stoppedquickly and: accurately, i

the? innerendlof'the carnslot' |3,1while 'the f clutch'i-s released-whenthe' follower; 1 is atj'the j outer end of 'thes'lotgY as indicatedbythe dotted 1 outlinel.

.The crank-shaft is j'ournaiedinteaings -vi siam the machine frame, andis driventhrough intermeshing spiral gears' |40and-|42 from` a .driveshaft |64 extending throughthe -machine from Vvfront tcfback',thedriveshaftgbeing `rotatef'i'from .l a' motor lflisee'FigQlZ) located in'`thebase-fof Y Y themachine l the vrelatively 4heavier parts beingallowed-to coast to rest to an indeterminate stopped position. Thearrangement and mannerof =operation"'o`i these disconnectible elementsvare similar in certain respects to those describedin thelinventors priorPatent No. 2,998,251 of NovemberV 9, i937.

' In the present inachinejtiie disconnectible "elements are arranged toLbe connected and disconnected from the'cam levers, being moved 1in-toand out of operative connection means @of stop mechanism hereinafter.vdescribed. The mechanism for actuating the 'needleirc the needle cam.lever .5o is 'iliustr-ated .in `Fig.' 53 and comprises a link' 92pivotally connected at its forward end to one arrn'of a bell crank e4,the "other arm o-fV which.. is 'provided with a toothed sector SSmeshing with gear teeth on the needle segment'. Adjacent its other end,the under side of the link is'iformed with a notch vor recess |69adapted to fit 'over a boss -lilziof complementary shape `carried by`theupper end of the cam llever 5o. During the operation of the machine,the link is inengagementwith'the cam lever, being held fdownby atension.'spring Hifi. The other stitch'forrning' and vworkhandling fInsewing around the' Vvmore din'icultfportions vof a shoe, itisfrequently desirable -tosew'at a'speed considerablylessv thanvthespee'datVV whichl the machine of-the present invention is capable ofrunning. VVFurthermore,-Y 'although' the disconnectible links,'actuated`as hereinafter described, are fullycapable of functioning eiectivelytodisconnect the devices' from their cam leversv upon. throwing the stopmechanism into operationeven though the machine is stillro'- Y tating atvery high speed, nevertheless" precise .adjustment is required toinsure'thatthe stop .mechanism will operate at the correct instantvinthe stitch forming cycle so that excessive strains may -be avoided'.'In view-of the fact thatthe'connection' 'and disconnection of thelinks'l is eiected, asv hereinafter described, by

means of `a singlecon'trol member or con- 'troiler,therefis provided"inithe machine of the present invention -a' combined' stop'mechanisnandy two-speed jd'rive'so `arranged `*that theconnection anddisconnection ofthe Avarious devices with their? 'actuating cam leversAupon Istartingand stopping the machinetakes' place while the machine visoperating at relativelylow speedsythev startingand stopping yof themachinerand'the selection of.. either high or? low speed operation beingA`under the control of the. i operator'through a single footitreadle.

The driving of the machine at either high or low speed lis` effected bymeans of two Ysets of chains Vand sprockets ofdifferent ratios betweenthe motor- Hi' and the drives'haftl |44, the high y speed drivecomprising motor sprocket1|5|l,chain i |52 vand drive shaft sprocket|54; while the .lowk

speed drive consists of motor sprocket |56, chain VA|58V andv driveshaft sprocket |501 The high". speed and lowg speed sprockets |54 and|60 `are I mountedV by means Vof ball'bearings v|62 on the main drive`shaft |44 'inindependentlyfrotat-KV able relation to oneanother andvthe shaftjla sleeveI |65 and clamping nut |6 serving to` maintain theVsprockets in proper"spacedposition ont the shaft.` Mounted betweenthef'sp'rockets |5'iY and |653v i'sa clutch-member I byiwhich either thehigh speed orthev -low speed 'sprocket may beV connected to the driveshaft- M4,4 or both disconnected therefrom -kupon rstoppingwthe No.-2,698,288 off November 9, `1937. Asv in said patent, the clutch isarranged to-lam'p the workY upon rocking the inner memberl incounterclock-` wise direction.` -In thevpresent machine,V this rockingmovement is effected by a leverlili: se-

-outer or actuated mem-ber 52d is connectedby link |26 to the bell cranklever IES-to which the presser foot is secured. The lever-|29 is pro- "lmachine. The Vclutch member'isprovided with external oppositelydirectedD cone surfaces |10, while the sprocketsv -|511 and |60 `haveinternal cone surfaces' |12 and |'|,."respe`ctively. The

clutch member is keyed' tothe drive shaft-by Akeys VH'ir extendingthrough slots |18 in sleeve |66 Vand shaft IM, the keys having flanges`|8|| for attachmentto thefhub'of 'the memberi.

To move the clutch dnember'into `and outof engagement with one or theother driving sprock-r Sets,v the v.inner-ends of the keys |16 arereceivedV I in seats icmmedrrm :a smb .shaft A482V axiallyslidablegin'bore l ica-tbe end of the drive shaft 1M. The projecting .end of istnbshafit'is formed .with 'a 'ball It -received Within -a-socket vinthenmxn 'end -o'f 2a rod ltelescopingfwithin van anni which .-issecuredto one -end of a rock Ashaft :H2 `pivotally mountedl-in -lugs ,484, at:the 'rear ofthe machinetrame.V

The rock shaft |82 is actuated to shift the oth'e Vmain shaft-I44;through connections -controtled from a .foot vtreadle 495 Aat `thebase of the machine.- These treadle -coritrolledconne tions includetoggle mechanism vso arranged that when the treaclle is Yin raised or:released -position,

the clutch member is midway between the sprockets :and thus mit ofAengagement with either. 0n `partially depressing the treadle, the'clutch member ismoved into engagement with the low speed drivingsprocket 460, while fiull-y depressingthe ftread-le shifts the'clutch'member into engagement with the high speed driving sprocket4,54. t

- The togglemechanism, fbest illustrated inFigs. .hl and #1.2, comprisesa yohe am `|218 secured to rock shaft +92, a cross 205 pivotal-lyAreoeived :in the outer ends of the yoke, and tog- @le arms '202 and 204.The anni :282, is pvlv oted en a. shaft 20B `secu-red 'by set screw 120Bin la bracket 24 El clamped .to the machine Iframe,

` .while the-ether toggle arm 204 isin the torni :of a :rod slidablediametrioally through' pin 289 in the yoke, arm 1198. The outer fend.ofwthe arm M4 is `provided with a `stop evasher 1242 andcheck nuts'2l-4, While` a compression spring 246 lsnxirrounds the rod hetweeni-pin200 land :the

shoulder Aof an eye ,portion 2 1-8 received, :between the' fonkedendf220 xofrarni 202 ,a pin 22-2 extending through the parts AI-and 224!vto con- 'neet the two farms-of :the toggle..A

Io raise or flower the toggle vandl thereby'shiit the clutch member, thearm 202 is provided fat `onel side with a lug 224 (see..Fig. 1l) throughwhich a rod 225 extends from the ifoot -treadle Collars 228 fixed to thetreadle rod :226'

above and Pbelow the Alug 224 q-posi'tiontlre (togg-le `arms fin :theposi-tion vshownin Fig. 12 when the t-Ieadle is held, byspring 230 in-.raised position against stop screw v232. As shown im :said ligure,.the toggle -junotion 'is `slightly above l'ts center indicated ,bydot-and-dash i."

i1im24, fand the clutch .member is midway fbe- 'tweenfthe drivesprockets and thus in disconfnected iposition. When the ftreadle :isdepressed .machine at high speed. On releasing the treadie, the :aboveoperations take place in the reverse manner, the engagement `of the slowspeed dr-ive ,prior to :frnal disengagement of th'e clisltohv serving toslow 4the machine 'down zsubstancially before the=disconnection of thelinks and the final stopping of; :the tsewing and-work .handling Themechanism -for disconnecting the disconnectible links from theiractuating 'cam levers stopping the machine the crankshaft .is 4rotating,tlmughat reduced speed,V as a result iof the disengagement 'ef thelhigh-speed. dri-ve `and bnief connection of the lo-w :speed drive ypriorto iinal disengagement-comprises a con-trolmem` hervorcontrollerv inFthe form ofa-rockshaft 24U (see, Figs. l and 2) provided with fa seriesof arms 242, cache-rm having at'fits forward end a socket or recessi244arranged to receive a downwardly'proecting boss #M5Y of semi-cylindricalshapeformedfat thefrear -endof each disconnectible VHThe rock-,shaftj240 isgarrangedto Vhe actuated to cause thetarms 242 to .engagetheir respective links at atime :in .the opera-tion ofthe unachinewhenthe roam `levers, due tothe par-.- ticularricongurationsioftheindividualcam slots,

Vvare experiencing dwells. Uponfdisconnection of the links lfrom the camlevers, the links Iand their actuated devicesarelocked fin stoppedposition hyerigagementof the bosses -246 Withsockets 244 inthearms 242.v

'The 4actuation yof rock shaft 243 `to Adiscom'iect the links stoppingthe machine rand to vreh connect the samey upon .starting is effected4hy starting .and stopping 'cams @2148 and 250 fmounted -on each side-fof -a vgear 252 :(see Figs.- 1, 2 and 11-1) driven by -gear 254 fromthecrankshaftg, The

cams -248 'and 250 together with itheVg-ear :2152,

, 4ment with 'a 'follower on a stopping lever 258,

are4 mounted upon a :sleeve which is .splined :so 'as to be capable of.sliding longitudinally on the supporting shaft 256. fOn stopping themachine, the vcams .areshi-fted'along the Asupporting shaft .256 tobring-'the stopping cam 250 into Yengagewhile to start :the machine, the.starting (cam 248 4is brought into operative relation with-a followeron starting lever 260. The cams zare shifted, as hereinafter described,Eby means of an :arm 2GB engaging a groove 210 .in the sleeve on whichthe cam and the` gear i252V are mounted. The levers-258i 'and 265' areconnected Vto 'an upwardly extending arm ,1262 connected-by a short link264 to an arm 266'fsecure'd torock shaft '240. The arm 282 andlink 264.form a toggle which is straightened upon sto'pping the machine to`rockthe Ydisconnecti'ng :arms 2422 of the controller upwardly, :thetoggle being broken upon starting 'the machine to vrock the 'controllerin the opposite direction and thereby 1lower :the disconnectiblex41in-ks into engagement with their cam levers.

In order that the actuation fof fthe rock shaft upon starting andstopping the machine may be accurately synchronized yWith the'operationof the two-'speed 'driving mechanism, the shifting of the starting andstopping -camslongitudinally 71 lof the shaft .-256's eiected-by-connections vfrom the treadle -rod -22fV -bywhich the clutch Vof the'two-.speed driving mechanism is controlled.

These connections comprise an arm 268 having a forked'upper end engagingthe groove 210 in the'startinggand lstopping cam assembly, ya rock shaft'212 on which the arm is mounted, anjd 'a 'second arm-214 securedfto-the :ou-ter end -of 'the rockshaftgsaid arm being provided with apivotallv mounted -block N6 through which the up- ;pcr end of thetreadle rod 226 passes. The rock vshaft J212 likewise carries la forkedarm '218 .pro- 'vided with vadjust-,able stop screws 280 adapted toengage xa 'xed lug Vvi282V to limit the longitudinal movement :of thestarting and vstopping cams. A .stop collar 2841s secured to the treadlerod below the block 2:16, while `a compression sprint;f 285 between thetop of the 'block and an iadjusting nut 281 on the treadle rod providesa yielding connection upon downwardv movement fof the tread-le rod. A Y

With the above described arrangement, de-

"vpression of the treadleto, start ythe machine servesbothto connectthedrive shaft to the motor through the low speed drive and also toshift the `starting caminto position to engage the starting lever 26!)so that, at the proper time in the rotation of the crank shaft 36, theYrock shaft2l0 is turned in counterclockwise direction.

to lower the disconnectible links into engagement with their actuatinglevers. Further depression of the'treadle operates as hereinbefore.described to disconnect the low speed drive and to throw the high speeddrive into operation, theY spring 285 yielding to permit the treadlerodto slide downwardly relative to varm 2id. When the treadle is releasedto stop theY machine, the high speed drveis rst disconnected and theslow speed drive connected, and thereafter thecollar 1251i engages block215 to shift the stopping cam'into operative positionV and effectdisconnection of the' links while the clutch member 158 is moved intoneutral position to permit the drive shaft and crank shaft to coast torest.

In order that the stitches may be set with the I I thread locks 'auniform distance below the surface of thework regardlessof variations inthe thickness'thereof, the machine of'the present invention is providedwith mechanism' v'arranged to cooperate with the take-up, duringthepassage vof the loop of lneedle thread over the shuttie, to measure inrelation to the thickness of the Vwork the amount of thread drawn Vofffrom the supply so that the proper length will be available for settingthe stitch with the lock at the desired depth. The take-up mechanism,already referred to, is similar to that illustrated in the applicantsPatent No. 2,097,452, .datedNovem ber 2, 1937, in that the take-up armslili and H5,

in setting the stitch, are moved from a position in which they aresubstantially parallelisee Fig.

16).,finto a position of substantial alignment at the limit of theirtaking-'up stroke, 'as shown in Figs. l andV 1'5, with the result'thatthe amount f,

of thread taken up is unaffected by` overthrow of the parts.y During thetake-up stroke, a thread clamp having xed andl movable gripping jaws 286and 288, respectively, is caused to clampfthe threadbetween the' take-upand the supply, WhiledurineT the upward movementy of the thread loopover the shuttle, the thread clampis opened to permit thread t-obe.drawnfrom ,the supply as required.

The threadmeasuring mechanismV for determining the amountl of threaddrawn on from the supply relative to'the thickness ofthe work comeprises a thread nger 2% adjustably secured by setl screw 292 in a borein one end of aV bar 294. Thebar extends forwardly through the mechineframe with the finger 290 in position toengage l the portion of thethread loop between lthe take- -up arms when'the Ylatterare in parallelor retracted position, as in Fig. 16. 4The thread nnger is. positionedto draw -aside more o-r less thread,V

and therefore cause to Vbe pulled off from'thesupply a greater or alesser amountof thread, by

connections `controlled vby the position of Ythe presserfoot wheninclamping position.`v The, bar 294 is slidably mounted in the machinefra-me `and is connected at its rear end to one arm of alever 29B bymeans of a short link 298. The other arm of lever 296 is connected by alink 30o to a lug| 302 onY the outer clutch member |24 ofthe presserfoot lactuating mechanism. Since the angular position of member 124 whenin clamping position is directly dependent on the'thickness of the Workdevicescomprising alinkI disconnectiblyiconf. vices, a crank shaft,drivingineans' ther rising a member providedwith'a'cam l V lowerinwtlfieslot, aucranlandco the shaft to final stopping position.

engaged Yby the presser foot, vthe setting lof the :threadm'easuringflnger29| is'like'vvise [controlled f by the workthickness'. For thinWorkgwhen the presser foot is relatively closeto the worksupport; thethread finger Ais in extended position, indi'-4 cated by-dotted line'wlin Fig. 16, and-thus hasv no lappreciable effect 'on' the amountyofgthread drawn Ao'ff as the thread looppasses over thetop of the`shuttle.' As the thickness of 'the'work increases,vv the thread 'lingerisz moved inwardly so thai-,fthe thread is engaged before theltake-uprmsreachfullyiretractedposition,divertingthe thread ,loopv and thuscausing g additionalthread- .a ifol'm' which willjpermit thejfthreadlock tope-drawn the proper distance into the'vvork when the' stitch'issetbythe take-up` 'i "i to be pulled,` olf from the supply in a 1 Thethread clamp isactuated to-grip the thread duringthe" setting of thestitchjby means of av cam GGS on `drive shaft,ldifthelcamfhaving anaxial cam 'slot S in .whichisfre'eivedjafollower 3 lo onv 'a`roclpariniin 2 .pivotallyfmounted on the machineframej a block :lili`throughwhich passes aredujced end portion oiga bar ping jaw- 288isniounted:A A compression vspring Sid provides ayieldingjconnectionwhen .thearm rocked inV clamping direction; ifwhilecheck nuts 'Slietract the Ioar''l 6 on the'releasegstro' g The threadmeasuring' mechanism 'herein dis.

closed forms the' subject-matten .offf al div applicationV Serial No.$20,548; nledNovemb The nature Vscope of the present L 1 having beenindicated; and a -maonine specicallydescribed, what is claimedjis:

1. An' outsole'shoesewing machinejhavinggfin combination, stitchformingand workfeedingide arate'trains of connections,forfactuatingcert''ri ofsaid devicesv 4from, vthe, crankshaft, eacni co,

imparting a relativel movement f toyth and follower lengthwise of''mesi-ot, fsai'd" prising ments, and' 'means' for actuating said controlmember to disconnect the actuated devices theshaft While permittingcontinuedrotat nof An outsole shoe sewingmachinefhavl combination,stitch forming and work feeding lower inthe slot, aVcrankanljconnectionsfor ,re-y ciprocating .the follower llengthwiseofthe' SlOt,

said member: being fmountedfformovement back and forthftransvers'elv ofthes'l'otdurin'gfthe reciprocation 0f the follower, means forftrfans'mitting said back and forthmovement toene of said nectedtofsaid'member, means for/disconnecting the crank The 312, is providedvwith;

3 l 6 onvwhich thejzrnovable grip# I @mais Y' the severalfeaturesoftheinvention havingbeen f de# n vices, Vacrank shaft, driving meanstherefonQseparatef trains 'of A connections for actuating certain Y. 'ofsaid devices Yfrom the crank shaft, each comprising amemberprovide'd'withacams1ot,"afols;

shaft .from its driving means, means comprising a control 'member formovingsaidlink no disconnect. n; from' sain siones. memrercland ineansfor actuating said'controlmemberj to'dis'l connect said link Whilepermitting continued ro` tation of the crank shaft to inalstopping`positin., Y

3.,'An`outsoleshoe seviin'g machinefhaving, in combinatcnfstitchc-r'r'ning vand Workffeeding devices,v a crank shaft,` drivingmeans'therefor, separate trainsv of connections. for actuating cert'ainof said devices 'from theY crank sharia.v each comprising aleverprovided. Witha cam slotlextending .lengthwisejthereon a follower, inthe. slot',

a. cankand connections 'forfreciprocatin'g'th'e` follower theslottobroducea backand forth of the levert` means for, transmitting saidmovement to one of said devices, comprising a llink disconnectiblyconnected tosaidvlevenV means for disconnecting the crank shaft from itsdriving meansgln'ieans c ornprisingfa control mem- Vber,for-mcviligsadlinkto disconnect it from said L flever, and meansforactuatingsaid'ccntrcl memher to disconnect saidl'nk ,While permitting, con,-inlled rt'tiOIifOf thdfrank sha-ittoffmd stop# pmgposm, .Y

y 44. outsolel yshcefsewing machine having: in 'combinatie stitchlforming and/Wrk'ifeeding defi/"idees,v crank shaft; diiving(I means(therefor, sexarate ftraii'isfc-f` conne(:tions'for actuating" cer.- fa0f Saldfdevcd from. the crank. shaitfecl comprising', a.. memberprovided with aY canSlot, a follower the slot;v a. crankandconnectioris; ior imparting arelative movement to thevnernber andfollower. lengthwise olthe slot, saidciollower andmembef being mountedforrelative back and forthf movement transversely offthe.. slotJv duringthemoveme't'oi the followerlengthwise ci the aecomo rate trains 10i?mechanisms for- YactuatingV the devi-ces from the drive shalftythe t-rins'l ofnieclianisms includingjelements adaptedv to be disconnected to.disconnect thedevices remthe shaft, and control jineans voscrativ`e onstopnin'gthe' machine to disconnect che high s-peedjdrivingV mechanismand connect the lowA speed; drive and thereafterV to disconnect thedisconnectible elements' of the trains omechanisms While disengaging thedrive shaft from itsdriving means to permit rotation ciA said shaft; to,irma-1 stopping` 8. Armachine having, combination, vdevices cooneratingvto perform` an operation' a' drive shaft,Y driving'Y means ,thereforincluding high speed and low Vspeed dri-vers, afpiuralityioi sepa-vslot, means .lfor 'i'.ransrnisting saidback andiorth movement toone,cf's'ai'd devices comprising anv element movable. tofdisconnectAsaid devicerorn the" crank shaft.; cleans; 'for disconnecting nie crank,shaftj'nom; its di vine means, and means for movinggsaid, movablelernfetsfupon `stunning theV machine to bring seid devices toA rest`While permittin contined, rotation ofthe'cra'nkfshaitto?naiilstopping-position-f Y s 5 .7'An outsole` shoe sewingzfrnachineliavi'ngt in combination, jstcn forming' and .work e'ediine ydwrces,;a,crank snafejdnvmg 'marismas-einen pluraltyjo trains offmechanismfonactuatins certain of said devices from the crank `shat,`,each

comprisi'nga rock 'armalihkconnecting' saidlaim with a, crank cithefcr'anl shaft,` al lever' provided with a cam slot, therei'rnaviollower carriedn bythe rock arm and lsliding"Within the Ucana/slottdrock thev lever, andconnections betvzeenfthe lever. and

its actuated'dev'ce1-v Y y 6. An outsole shoe sewing machinelhavingL incoinloinat'iorr`4 stitch iormingV and Work feeding c devices includingavi/drk piercingI needle andY a presser 'foot adapted to. clamp. andunclamp tne Work, a crankshaft, driving "ineansfthereicr,

mechanisms "for actuating. the. devices from the crank shaft,the'mechanism for actuatin'efthe presser foot. comprising a Horton clutchhaving actuating' actuated 'elements-,I conect ingthe presserVfoctwith.'the actnated. element of the clutchL/ a lever V`provided`with cam slot therein 'and connected Wi'ththe actuating. element fofthe"clutch', and aioliovv'er, engagingjthe cam 'slotzand'actiiated by thecrankshaft tdcause, the clutch to ciampi and unclamp the work.

'7. A m-aclrine having in ccrrrbinationV devices cceperatmg to perform,an operation, drive shaft, driving mea-ns {therefcr including highspeedi and lovvspeed driving4 mechanisms, sepa#- rateY trains ofmechanisms for, actuating theV deviceslthe drive shaft,kthe trainsofmech-` anisms including elements adapted to bedisconto'disconnect'vthe devicesA from the shaft,

speed or the low` speeddriver tojtheshaifm and single control meansoperablei to shn member' and; toV connect` andi' disconnect, thedisconnectiole elementales-id means being operative, on stopping thernace, to shift the, clutch member out oi engagemenU with the high..`snee,cl driver and'into engagement. with the low; lspeed dri *er andthereafter to. disconnectl the.l disconnecticle elements of the trains omechanisms Wliledisengagingl the clutch irs-:moei: from the speeddriverto permit rotation or" the. drive shaftto inalstoppingpositionf Amachine lievi-ng;y in combination-`devices cooperating to' nerf anQ'n-eratn'nn;v aI Adrive shaft, Adriving means therefor' including` highspeed and iov-J` sneed'driving' mechanisms, sena?, 'rate trains, ci'mechanisms for actuatingl the devices YfromY the dri-ve' shaft, 4 the,trains of mechanisznsj including elements movable to 'connect anddisconnect actuated devices fromy the sluit,A means including start landstoppingcams. starting*andV stopping cani leversffor moving the.'elements to connect'and disconnect the. actuated devices vfrom the,shatfron starting and stopping the. machine, a -tieadle 'andftradleactuated, connections operative, on) starting. Vthe niachine'to. connectthe. low speedcl'1. i.ve,1ar1dA likewise.rendeneperatidzeY the starting;cam

startingfcain lea-'er toconnect the movable ele.- ments of the' trainscfmechanisms and theres. aiterto. disconnect-.the 10W. speeddrivefandconnect, thehigh speed'dri-ve,v operativqon:

stopping Y the;y machine. to.. disconnect, the, high sneed. drive andconnectv 'shell'r` ,c s, s f-rspeeedfivewdthereter render operative the.*stoms-img-Y and l stepnir-iglcazm leverv toY disconnect-the actuated tV.devices from; the shaft `whileKdisevngaging, the

10 lL-machine hai/ina, in, combination. .desi-ces.

the 'clutch tions actuated by said treadle rod upon engagement of theclutch member With the low speed driver to shiftvthe starting cam intocooperating relation with the starting cam lever to effect connection ofthe disconnectible elements of the trains of mechanisms.

BERNARD T.` LEVEQUE.

